New issue
Advanced search Search tips

Issue 720323 link

Starred by 2 users

Issue metadata

Status: Duplicate
Merged: issue 720351
Owner: ----
Closed: May 2017
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug-Security



Sign in to add a comment

Use-of-uninitialized-value in gif_takeover_gce_ptr

Project Member Reported by ClusterFuzz, May 10 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5842586320502784

Fuzzer: libfuzzer_pdf_codec_gif_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  gif_takeover_gce_ptr
  gif_decode_image_info
  gif_get_frame
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=470461:470492

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5842586320502784


Issue filed automatically.

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information.
 
Project Member

Comment 1 by sheriffbot@chromium.org, May 10 2017

Labels: M-60
Project Member

Comment 2 by sheriffbot@chromium.org, May 10 2017

Labels: ReleaseBlock-Beta
This issue is a security regression. If you are not able to fix this quickly, please revert the change that introduced it.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot
Project Member

Comment 3 by sheriffbot@chromium.org, May 10 2017

Labels: Pri-1
Cc: npm@chromium.org
Components: Internals>Plugins>PDF

Comment 5 by npm@chromium.org, May 10 2017

Labels: -ReleaseBlock-Beta
Mergedinto: 720351
Status: Duplicate (was: Untriaged)
Our gif stuff is only used in our XFA branch which is not enabled right now.
Project Member

Comment 6 by ClusterFuzz, May 12 2017

ClusterFuzz has detected this issue as fixed in range 470883:470917.

Detailed report: https://clusterfuzz.com/testcase?key=5842586320502784

Fuzzer: libfuzzer_pdf_codec_gif_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  gif_takeover_gce_ptr
  gif_decode_image_info
  gif_get_frame
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=470461:470492
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=470883:470917

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5842586320502784


See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.
Project Member

Comment 7 by sheriffbot@chromium.org, Aug 17 2017

Labels: -Restrict-View-SecurityTeam allpublic
This bug has been closed for more than 14 weeks. Removing security view restrictions.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Sign in to add a comment